Subway shield segment horizontal assembly inspection base
By designing a ring support table for horizontal assembly inspection of subway shield pipe segments, the problems of large weight and difficulty of adjustment of single blocks are solved, and rapid and accurate pipe segment position adjustment and assembly efficiency are achieved.
Patent Information
- Application Number
- CN202421826447.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-07-31
AI Technical Summary
During the horizontal assembly inspection of subway shield pipe segments, the large weight of a single piece makes it difficult to accurately place it. The allowable deviation of the dimensions after ring formation is strictly required, and the adjustment of the ring direction and radial direction is difficult to adjust the horizontal degree in one go after ring formation is difficult to adjust the horizontal degree in one go.
A subway shield pipe sheet horizontal assembly inspection base is designed, and annular support table is spliced with four sets of arc-shaped single components, including arc-shaped flat steel plates, arc-shaped steel plates, I-shaped steel, inner diameter positioning lines, reserved holes, leveling components, circumferential adjustment reaction parts and radial adjustment jacks. These components are used to position, leveling and adjustment of the pipe sheet.
The base is simple in structure and convenient in operation. It can quickly level and adjust the position of the pipe segment, improve the working efficiency of the three-ring test, reduce manpower and time consumption, and ensure the accuracy and efficiency of pipe segment assembly.
Smart Images
Figure CN222579138U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipe segment assembly detection, in particular to a horizontal assembly inspection base for subway shield pipe segments. Background Art
[0002] With the large-scale construction of subway tunnels and highway tunnels in cities in my country, shield segments are widely used in the construction of these tunnels due to their convenient construction and strong adaptability. Shield segments are the basic units of shield tunnel masonry rings. Shield segments need to be prefabricated in annular blocks and assembled into shield tunnels with longitudinal staggered joints. After the shield segments are manufactured, they need to pass the three-ring assembly test. In recent years, our company has undertaken a large number of subway shield segment production projects. Each project requires a large number of horizontal segment assembly inspections according to the specifications and design documents. Taking the 6.2m outer diameter segment currently produced as an example, the weight of a single segment is 3.7t. Due to the large weight of a single segment, it is difficult to accurately position it when it is horizontally assembled and hoisted into place. At the same time, since there is no reverse support point after it is positioned, the difficulty of circumferential and radial adjustment is further increased. In addition, since the inner diameter deviation of the subway segment after horizontal assembly into a ring is required to be no more than 2mm, a large number of personnel and time are required to adjust the position after the ring is formed each time to ensure that the size deviation requirements of the horizontal assembly inspection are met. Furthermore, since the assembly site is outdoors, although the site has been hardened with concrete, it is difficult to achieve 100% levelness. After the ring is formed, repeated level measurements and level adjustments are required.
[0003] Due to the practical problems such as frequent inspections of horizontal assembly of subway shield segments, heavy weight of single segments, difficulty in accurate positioning during assembly, strict requirements on allowable deviation of dimensions after ring formation, difficulty in circumferential and radial adjustments, and difficulty in adjusting the horizontality in one go after ring formation, in-depth research was conducted on the above-mentioned issues, which led to the present case. Utility Model Content
[0004] In view of the deficiencies of the prior art, the utility model provides a horizontal assembly inspection base for subway shield segments, which solves the problems raised in the background technology.
[0005] To achieve the above purpose, the utility model is implemented through the following technical scheme: a subway shield segment horizontal assembly inspection base, including a ring-shaped support platform composed of four groups of arc-shaped single components, the single component includes an arc-shaped flat steel plate and an arc-shaped steel plate welded on both sides, an I-beam is arranged between the arc-shaped flat steel plates, an inner diameter positioning line for segment positioning is arranged on the upper end surface of the arc-shaped flat steel plate, a double row of reserved holes is opened in a ring array along the arc-shaped flat steel plate, and a leveling component is arranged at the lower end of the single component.
[0006] The adjacent single components are assembled and fixed via bolt connectors.
[0007] The above-mentioned leveling assembly includes a leveling pad, which is fixed at the lower end of the single assembly, and a leveling bolt is installed at the lower end of the leveling pad.
[0008] The above-mentioned subway shield segment horizontal assembly inspection base also includes an annular adjustment reaction force piece, which is assembled and connected to the arc-shaped flat steel plate through a reserved hole. One end of the annular adjustment reaction force piece is provided with a wedge-shaped pad and an annular adjustment jack, and the telescopic end of the annular adjustment jack is in contact with the end of the segment.
[0009] The above-mentioned annular adjustment reaction member includes a reaction member bottom plate, which is assembled and fixed with the arc-shaped plane steel plate by fixing bolts. A reaction member vertical plate is welded to one end of the reaction member bottom plate, and a stiffening rib plate is provided between the reaction member vertical plate and the reaction member bottom plate.
[0010] The above-mentioned subway shield segment horizontal assembly inspection base also includes a radial adjustment jack and a temporary steel support. The radial adjustment jack is arranged on the arc-shaped flat steel plate along the radial direction of the pipe fitting and the telescopic end is attached to the outer wall of the segment. The temporary steel support is arranged on the arc-shaped flat steel plate and one end is aligned with the inner diameter positioning line.
[0011] Steel pads are provided between the telescopic ends of the annular adjustment jacks and the telescopic ends of the radial adjustment jacks and the pipe segments.
[0012] The utility model provides a horizontal assembly inspection base for subway shield segments. It has the following beneficial effects: the horizontal assembly inspection base for subway shield segments adopts the method of splicing four groups of arc-shaped single components to form an annular support platform, which has a simple structure and is easy to operate. It can be disassembled or spliced at any time according to actual use requirements; the single component is only composed of arc-shaped flat steel plates, arc-shaped steel plates on both sides and I-beams, which are welded, and the material selection is convenient and the cost is low; the lower end of the single component is provided with a leveling component, which can realize the rapid leveling of the base and improve the efficiency of the three-ring test; the upper end surface of the arc-shaped flat steel plate is provided with an inner diameter positioning line for positioning the segment, which can realize the rapid positioning and calibration of the segment and improve the efficiency of the segment assembly operation; the upper edge of the arc-shaped flat steel plate is provided with a double row of reserved holes in a circular array, which can be used to assemble other accessories to achieve local fine-tuning of the segment position and rapid adjustment and calibration. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a top structural schematic diagram of the overall assembly state of the subway shield segment horizontal assembly inspection base described in the utility model.
[0014] Figure 2 It is a schematic diagram of the top view of the structure of a single component in the horizontal assembly inspection base of the subway shield segment described in the utility model.
[0015] Figure 3 For this utility model Figure 1Schematic diagram of the cross-sectional structure at the AA position.
[0016] Figure 4 It is a schematic diagram of the arrangement of the leveling assembly of the utility model.
[0017] Figure 5 It is a partial schematic diagram of the utility model in the circumferential adjustment state of the pipe segment.
[0018] Figure 6 It is a partial schematic diagram of the utility model in the radial adjustment state of the pipe segment.
[0019] Figure 7 It is a schematic diagram of the top view of the annular adjustment reaction force member of the utility model.
[0020] Figure 8 For this utility model Figure 7 Schematic diagram of the cross-sectional structure of the BB position.
[0021] In the figure: 1. curved flat steel plate; 2. curved steel plate; 3. I-beam; 4. pipe segment; 5. inner diameter positioning line; 6. reserved hole; 7. bolt connector; 8. leveling pad; 9. leveling bolt; 10. circumferential adjustment reaction piece; 11. wedge-shaped pad; 12. circumferential adjustment jack; 13. radial adjustment jack; 14. temporary steel support; 15. steel pad; 1001. reaction piece bottom plate; 1002. fixing bolt; 1003. reaction piece vertical plate; 1004. stiffening rib plate. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Embodiment: Based on the frequent inspection of the horizontal assembly of subway shield segments, the heavy weight of a single piece, the difficulty in accurately positioning during assembly, the strict requirements on the allowable deviation of the size after ring formation, the difficulty in circumferential and radial adjustments, and the difficulty in adjusting the horizontality in one go after ring formation, this subway shield segment horizontal assembly inspection base is designed to facilitate the adjustment of size and horizontality after assembly into a ring, save a lot of manpower and time, and quickly complete the horizontal assembly inspection work of the segments that meet the requirements.
[0024] See the instruction manual Figure 1 -Attached Figure 8It can be seen that this scheme specifically designs a horizontal assembly inspection base for subway shield segments 4, including an annular support platform composed of four groups of arc-shaped single components, the single component includes an arc-shaped plane steel plate 1 and an arc-shaped steel plate 2 welded on both sides, an I-beam 3 is arranged between the arc-shaped plane steel plate 1 and the arc-shaped steel plate 2, the upper end surface of the arc-shaped plane steel plate 1 is provided with an inner diameter positioning line 5 for positioning the segment 4, a double row of reserved holes 6 are opened along the annular array of the arc-shaped plane steel plate 1, and a leveling component is arranged at the lower end of the single component; adjacent single components are assembled and fixed by bolt connectors 7, wherein the leveling component includes a leveling pad 8, the leveling pad 8 is fixedly arranged at the lower end of the single component, and a leveling bolt 9 is installed at the lower end of the leveling pad 8; the base also includes an annular adjustment reaction member 10, the annular adjustment reaction member 10 is assembled and connected to the arc-shaped plane steel plate 1 through the reserved hole 6, and a wedge-shaped pad is arranged at one end of the annular adjustment reaction member 10 Wood 11 and annular adjustment jack 12, the telescopic end of the annular adjustment jack 12 is in contact with the end of the pipe segment 4, wherein the annular adjustment reaction member 10 includes a reaction member bottom plate 1001, the reaction member bottom plate 1001 is assembled and fixed with the arc-shaped plane steel plate 1 by fixing bolts 1002, a reaction member vertical plate 1003 is welded at one end of the reaction member bottom plate 1001, and a stiffening rib plate 1004 is provided between the reaction member vertical plate 1003 and the reaction member bottom plate 1001; in addition, the base also includes a radial adjustment jack 13 and a temporary steel support 14, the radial adjustment jack is arranged on the arc-shaped plane steel plate 1 along the radial direction of the pipe fitting and the telescopic end is in contact with the outer wall of the pipe segment 4, the temporary steel support 14 is arranged on the arc-shaped plane steel plate 1 and one end is aligned with the inner diameter positioning line 5, wherein a steel pad 15 is provided between the telescopic end of the annular adjustment jack 12 and the telescopic end of the radial adjustment jack and the pipe segment 4.
[0025] The working principle is as follows: the single components of the assembled base are made separately and assembled on site; the leveling bolts 9 are used to level the base so that the leveling pads 8 are in the same horizontal plane; after assembly, the measurement and fine-tuning are carried out to make the inner diameter positioning line 5 a standard circle, and the connecting bolts are tightened; after assembly in place, the single pipe segment 4 is hoisted and placed on the base. After the single pipe segment 4 is in place, the circumferential position of the single pipe segment 4 is fine-tuned by using the annular adjustment jack 12 and the annular adjustment reaction piece 10, and the reaction piece bottom plate 1001 in the annular adjustment reaction piece 10 is assembled and fixed to the arc-shaped flat steel plate 1 by fixing bolts 1002, a wedge-shaped pad 11 is placed on one side of the reaction piece vertical plate 1003, and an annular adjustment jack 12 is placed between the wedge pad 11 and the pipe segment 4. A steel pad 15 is placed between the adjustment jack 12 and the segment 4, and the thrust of the annular adjustment jack 12 is used to achieve annular fine-tuning of the segment 4; a temporary steel support 14 is used to limit the segment 4 radially, and the radial adjustment jack 13 is used to adjust the position of the segment 4 in the radial direction so that the inner side of the segment 4 coincides with the inner diameter positioning line 5; after the adjustment is in place, the adjusted segment 4 is temporarily connected to the segment 4 in place using annular connecting bent bolts; after the entire ring is assembled, it is measured and fine-tuned to meet the requirements of internal and external deviations, and the annular connecting bent bolts are tightened. After the ring splicing is completed, the overall subway shield ring is hoisted to the test site, and the above operations are repeated to continue splicing the segment 4, so that the three-ring assembly test is carried out smoothly with efficient cooperation.
[0026] The horizontal assembly inspection base of the subway shield segment 4 adopts the method of splicing four groups of arc-shaped single components to form an annular support platform, which has a simple structure and is easy to operate. It can be disassembled or spliced at any time according to actual use requirements; the single component is only welded by an arc-shaped flat steel plate 1, arc-shaped steel plates 2 on both sides and I-beams 3, which is convenient for material selection and low in cost; a leveling component is arranged at the lower end of the single component, which can realize rapid leveling of the base and improve the efficiency of the three-ring test; the upper end surface of the arc-shaped flat steel plate 1 is provided with an inner diameter positioning line 5 for positioning the segment 4, which can realize rapid positioning and calibration of the segment 4 and improve the efficiency of assembling the segment 4; a double row of reserved holes 6 are opened on the upper edge of the arc-shaped flat steel plate 1 along the annular array, which can be used to assemble other accessories to achieve local fine-tuning of the position of the segment 4 and rapid adjustment and calibration.
[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. The horizontal assembly inspection base of subway shield segments is characterized by: It comprises an annular support platform composed of four groups of arc-shaped single components, wherein the single component comprises an arc-shaped flat steel plate and arc-shaped steel plates welded on both sides, an I-beam is arranged between the arc-shaped flat steel plates, an inner diameter positioning line for positioning the pipe segment is arranged on the upper surface of the arc-shaped flat steel plate, a double row of reserved holes is opened in an annular array along the arc-shaped flat steel plate, and a leveling component is arranged at the lower end of the single component.
2. The subway shield segment horizontal assembly inspection base according to claim 1 is characterized in that: Adjacent single components are assembled and fixed via bolt connectors.
3. The subway shield segment horizontal assembly inspection base according to claim 1 is characterized in that: The leveling assembly comprises a leveling pad, which is fixed at the lower end of the single assembly, and a leveling bolt is installed at the lower end of the leveling pad.
4. The subway shield segment horizontal assembly inspection base according to claim 1 is characterized in that: It also includes an annular adjustment reaction piece, which is assembled and connected to the arc-shaped flat steel plate through a reserved hole. One end of the annular adjustment reaction piece is provided with a wedge-shaped pad and an annular adjustment jack, and the telescopic end of the annular adjustment jack is in contact with the end of the pipe segment.
5. The subway shield segment horizontal assembly inspection base according to claim 4 is characterized in that: The annular adjustment reaction member includes a reaction member bottom plate, which is assembled and fixed to the arc-shaped plane steel plate by fixing bolts. A reaction member vertical plate is welded to one end of the reaction member bottom plate, and a stiffening rib plate is provided between the reaction member vertical plate and the reaction member bottom plate.
6. The subway shield segment horizontal assembly inspection base according to claim 4 is characterized in that: It also includes a radial adjustment jack and a temporary steel support. The radial adjustment jack is arranged on the arc-shaped flat steel plate along the radial direction of the pipe fitting and the telescopic end is in contact with the outer wall of the pipe segment. The temporary steel support is arranged on the arc-shaped flat steel plate and one end is aligned with the inner diameter positioning line.
7. The subway shield segment horizontal assembly inspection base according to claim 6 is characterized in that: Steel pads are provided between the telescopic ends of the annular adjustment jacks and the telescopic ends of the radial adjustment jacks and the pipe segments.